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authorBjörn Gustavsson <bjorn@erlang.org>2011-06-29 08:09:21 +0200
committerBjörn Gustavsson <bjorn@erlang.org>2011-08-08 11:59:11 +0200
commit8d3a2dfa646ab2ceb41905c673adb15e57bf9cfd (patch)
treeb27c6d43f8c61eab0069d6f6466cee6d78d149d5 /lib/runtime_tools/c_src/Makefile.in
parent13cc114325d31626a84fbecbe07bb0f76c3726cf (diff)
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*/c_src/Makefile*: Support parallel make
Create directories first, not within implicit rules. If two 'install' instances runs at the same time attempting to create a directory, one of them may fail with an "File exists" error. I tried to use order-only prerequisites to create the directories, but run into two problems: First, order-only prerequisites are only implemented in Make 3.80 and later. Second, on a computer running Solaris/Intel 2.8 (with Make 3.80), order-only prerequisites seemed to work like ordinary prerequisites, causing targets to be re-built if the timestamp for the directory changed. Therefore, using a shell command to run mkdir seems to be the more portable solution.
Diffstat (limited to 'lib/runtime_tools/c_src/Makefile.in')
-rw-r--r--lib/runtime_tools/c_src/Makefile.in15
1 files changed, 2 insertions, 13 deletions
diff --git a/lib/runtime_tools/c_src/Makefile.in b/lib/runtime_tools/c_src/Makefile.in
index 840de39f07..73ab6cdc11 100644
--- a/lib/runtime_tools/c_src/Makefile.in
+++ b/lib/runtime_tools/c_src/Makefile.in
@@ -89,42 +89,31 @@ endif
# Targets
# ----------------------------------------------------
-debug opt: $(OBJDIR) $(BINDIR) $(SOLIBS)
+_create_dirs := $(shell mkdir -p $(OBJDIR) $(LIBDIR))
-$(OBJDIR):
- -@mkdir -p $(OBJDIR)
-
-$(BINDIR):
- -@mkdir -p $(BINDIR)
+debug opt: $(SOLIBS)
$(OBJDIR)/%.o: %.c
- $(INSTALL_DIR) $(OBJDIR)
$(CC) -c -o $@ $(ALL_CFLAGS) $<
$(LIBDIR)/trace_ip_drv.so: $(TRACE_IP_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^ -lc $(LIBS)
$(LIBDIR)/trace_file_drv.so: $(TRACE_FILE_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^ -lc $(LIBS)
$(LIBDIR)/trace_ip_drv.dll: $(TRACE_IP_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
$(LIBDIR)/trace_file_drv.dll: $(TRACE_FILE_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
#
# VxWorks is simply to different from Unix in this sense.
# Here are the inference rules for VxWorks
#
$(LIBDIR)/trace_ip_drv.eld: $(TRACE_IP_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^
$(LIBDIR)/trace_file_drv.eld: $(TRACE_FILE_DRV_OBJS)
- $(INSTALL_DIR) $(LIBDIR)
$(LD) $(LDFLAGS) -o $@ $^
clean: